Takato Matsuki (Takato Matsuda (松田 啓人,Matsuda Takato?)) is a cheerful, happy, carefree person and the main protagonist of the Digimon Tamers who is the only child of family who runs their very own bakery. He loves Digimon, playing the Digimon card game and drawing up Digimon he made up. He eventually finds a Blue Card among his cards and unknowingly used it to bring Guilmon to life. Soon after, he meets Henry and then Rika, learning that Digimon are mysteriously appearing in their world. At first he's not very good at battling, but he improves over time. Because Guilmon was a product of his imagination, Takato appears to empathic with his Digimon and thus the two influence each other in their fights. This bond is later augmented when Guilmon gains the ability to become Gallantmon when Takato Biomerges into him. He generally has feelings for Jeri Katou throughout the series, and confesses in episode 41.

Guilmon (ギルモン,Girumon?) is a viral raptor-like Reptile Digimon who bares the Digital hazard mark on his chest. Guilmon was created by Takato as a drawing and was brought to life soon after by the Blue Card which the Digignomes secretly placed among Takato's card deck. Though a rookie, Guilmon originally has a child mentality and was unaware of the differences between humans and Digimon, calling his partner Tamer "Takatomon" and loving to eat the Matsuki Bakery's bread. After some misadventures, Takato hides his partner in Shinjuku Park, and Guilmon matures enough to be able to speak normally and play with Takato's classmates. Guilmon has a very keen sense of smell and possess somewhat of a sixth sense to detect other digimon if around, usually going feral in earlier fights due to his virus nature. Guilmon is very loyal and protective of Takato; he is not frightened of many things, but was reduced to tears when he saw Takato react in fear to his Champion form. In the finale, Guilmon regressed to Gigimon as a side effect of the Red Card and thus was forced to part ways with Takato. Though a Rookie, Guilmon is very powerful, as shown in his fight with Ice Devimon where he destroys the Champion with relative ease where Kyubimon, also a Champion, was defeated by him. Also, during Battle of Adventurers Guilmon destroys Scorpiomon, an Ultimate with just an Aero Wing modification to help him.

Growlmon (グラウモン,Guraumon?, Growmon) is the Digivolved form of Guilmon, an extremely powerful Dinosaur Digimon who uses the dragon blades on his arms he can cut through almost anything. Guilmon first Digivolved to Growlmon during his fight against Devidramon, though he was unable to regress for an entire day.

WarGrowlmon (メガログラウモン,Megaroguraumon?, MegaloGrowmon) is Guilmon's Ultimate form, an extremely powerful cyborg Digimon who first manifested when Takato uses the Blue Card during the Tamers' fight with the Deva Mihiramon. The form is used to battle the Devas that follow and later Beelzemon. He is armed with bladed Pendulum Blades and the Atomic Blaster on his chest.

Megidramon (メギドラモン,Megidoramon?) is an alternate Mega form of Guilmon, an Evil Dragon Digimon which manifested as the result of Takato's rage towards Beelzemon turning Guilmon into a mindless monster while the boy's D-Ark shatters in the process. In this form, the full destructive power of the Digital Hazard is released, causing the Digital World to begin breaking up in the monster's presence as he tries to devour Beelzemon. However, absorbing Makuramon's data at the last second, Beelzemon manages to knock Megidramon unconscious so Takato can reach his partner and restore him to his usual form.

Gallantmon(デュークモン,Dyūkumon?, Dukemon) is the actual Mega form of Guilmon, an Exalted Knight Digimon armed with the Gram lance and the Aegis Shield. Guilmon is first able to assume the form when Takato's wish to fight by his partner's side against Beelzemon causes them to Biomerge. Though Gallantmon defeats Beelzemon, he spares him at Jeri's request. After Dobermon's sacrfice, Gallantmon is used in the fight against the D-Reaper prior to receiving the ARMS "Grani" as his mode of transportation.

Gallantmon: Crimson Mode: After being injured by the D-Reaper in the finale, Gallantmon merges with his steed Grani and digivolves into Crimson Mode. In this mode he is incredibly powerful, able to take on the D-Reaper's agents with ease. In Runaway Locomon, Gallantmon assumes this form again due to Takato's determination to win and proves to be so powerful that he destroys a whole army of Parasimon with one shot when all the Tamers combined were having a hard time battling them.

Guilmon was created by Chiaki J. Konaka, influenced by Ultraman and Kaiju movies. Upon viewing the initial design sketches, he assumed that the character would be roughly the same size as Agumon. However, when he realized that Guilmon would be about the size of a human adult, he realized that "[h]e was nowhere near small enough for a child to hide in his room." Konaka then realized that he could tailor the plot of Digimon Tamers to incorporate this problem.[1]

Henry Wong (Jenrya Rī (李 健良,Rī Jenrya?), nicknamed Jen (ジェン,Jen?) in the Japanese version), is the 3rd born child in a half-Hong Kong and half-Japanese family. Along with his father Janyu, Henry is a Tai Chi student. Prior to the series, Henry thought Digimon fighting each other was a game until he realizes they are living beings. After using a Blue Card to create his partnership with Terriermon, Henry vowed to never have to make the Digimon fight again. However, after many situations where Terriermon is forced to digivolve and fight, Henry realizes there are many battles worth fighting. For the first half of the series, Henry was unaware of his father's connections with the Monster Makers and Hypnos. In the finale, after using the Red Card to execute Operation Doodlebug to wipe out the D-Reaper, Henry realized that using it would mean that the Digimon have to return to their world.

Terriermon (テリアモン,Teriamon?) is an one-horned terrier/bunny Beast Digimon with a laidback personality, often using the word "Momantai" (written as 無問題 or 无问题), a Cantonese phrase that means "take it easy/no problem". Terriermon also has very large ears which are often used for spinning attacks such as in the move "Terrier Tornado" or to float and glide. Terriermon was originally a wild Digimon who lives by the rules of the "survival of the fittest" doctrine in the harsh realm of the Digital World. When Henry received a Digimon video game as a present from his father, he selected Terriermon to play with because he identified with him. However, when Henry forced Terriermon to digivolve during a battle between a Gorillamon, Gargomon goes on a rampage before regressing and losing consciousness. Soon after, a remorseful Henry finds a Blue Card which he used to bring Terriermon into the real world as his partner. For the first half of the series, Henry hid Terriermon from his family in plain sight by making Terriermon act like a simple stuffed animal which his younger sister Susie plays with. In the finale, Terriermon regressed to Gummymon as a side effect of the Red Card and thus was forced to part ways with Henry.

Gargomon (ガルゴモン,Garugomon?, Galgomon): Terriermon's champion form, a Beast Digimon whose forearms are gatling gun arms that he uses in his attacks. Terriermon was able to become Gargomon prior to the series, yet Henry originally tried to keep him from digivolving as he goes crazy in his state. Eventually, Gargomon is able to control himself in later fights.

Rapidmon (ラピッドモン?): Terriermon's ultimate form, a Cyborg Digimon able to move at fast speeds. Terriermon first assumes the form during the attack by Pajiramon and Vajiramon.

MegaGargomon (セントガルゴモン,Sentogarugomon?, SaintGalgomon): The Mega form of Terriermon, a machine Digimon whose size and heavy arsenal make him a weapon. But where firepower fails, MegaGargomon benefits from his Biomerging with Henry to utilize his partner's T'ai chiMartial Arts skills in combat. Terriermon achieves the form when Henry Biomerges with him during the fight against Zhuqiaomon, though the Sovereign was far from defeated. MegaGargomon later participated in battles with the D-Reaper, and used the Juggernaut program downloaded into Terriermon to defeat it.

Rika Nonaka (Ruki Makino (牧野 留姫,Makino Ruki?)) is a brave girl from a family consisting of her mother and grandmother. She is known as the "Digimon Queen" due to her experience in Digimon card tournaments. After repeated success, Rika finds a Blue Card which enables her to receive Renamon as her partner. At first, Rika sees Digimon as nothing more than data to make Renamon the strongest Digimon in the world. But after the ordeal with Icedevimon, Rika ends their partnership out of fear. However, Rika comes to Renamon's aid and the two begin their partnership anew as true friends.

Renamon (レナモン?) is a fox-like Beast Digimon who is very mature in both form and mentality. In a fight, Renamon uses ninja-like skills including vanishing from view until called and moving at fast speeds. These traits mean that, unlike Guilmon and Terriermon, she usually fends for herself when she and Rika are apart. She has no memory of her life before meeting Rika, whom she first saw as nothing more but a means to become stronger. Her initial exchanges with the other Tamers and their Digimon cause her to question this belief, and Rika's obsession with battle. Eventually after the ordeal with IceDevimon and the two parting ways, partner and tamer begin to understand each other, and Renamon becomes more focused on protecting Rika as their partnership grows into true friendship. After the Tamers put aside their differences, Renamon comes to view Impmon as foolish and worth only pity, since he spends his time ridiculing the other Digimon when he could be having fun. She is thus the first to learn that Impmon once had human partners, and of his desperation to digivolve. In the finale, Renamon regressed to Viximon as a side effect of the Red Card and she was forced to part ways with Rika.

Kyubimon (キュウビモン,Kyūbimon?): A Mythical Beast Digimon, Renamon's Champion level form. Though Rika attempted to have her assume the form prior, Renamon manages to achieve digivolving when she wanted to protect Rika from a Dogukumon.

Taomon (タオモン?): An onmyouji-themed Majin Digimon who fights with various spells and charms to help her harness the powers of the magical energy that flows through the universe. Taomon first appeared to fight the Ox Deva, Vajramon.

Sakuyamon (サクヤモン?): Renamon's mega form, an armored Shaman Digimon armed with the Vajra Khakkhara and able to summon energy kudagitsune to her aid. Renamon gains this form when Rika biomerges with her in a leap of faith rather than let her partner face the D-Reaper alone. During the finale, Sakuyamon weakens herself by converting her armor into energy supporting Justimon in an attempt to defeat the D-Reaper.

Chiaki J. Konaka originally conceived Renamon as an androgynous character, but her personality development over the course of the series caused the character to be treated as female.[1]

The development team of Digimon Tamers decided early on in drafting that Calumon would have a unique role and serve as a mascot. Digimon in the Japanese-language incarnation of Digimon Tamers often spoke with affectations and patterns resembling those of human children. This generally did not carry over to their English-language counterparts, who spoke largely the same way. Chiaki J. Konaka pushed for this not to be the case with Calumon, because of a sentiment that the character "needed to have a strong impact on the audience". Thus, Calumon's dialogue often contained the words calu or kuru—pieces of his name—at the end of sentences.[1]

Calumon's role is not that of a fighter, and his immature antics and over-expressed emotions leave little doubt about this fact. In Digimon Tamers, Calumon is the only Digimon on the protagonist's side who had no tamer, although he does seem to have a special bond with Jeri. When Jeri was trapped inside the Kernel Sphere, Calumon was able to lead Beelzemon on a rescue mission, having somehow sensed her in danger. He also helped her snap out of her depression and protected her from the Chaos with a forcefield during the final battle. When the Tamers returned from the Digiworld, Calumon chose to live with Jeri. In the beginning of the series, Calumon thinks of the Real World as a game and the humans as other digimon. His ears, usually short, can be expanded, usually when Calumon is happy or excited, to the size shown in the picture to allow him to "fly". His forehead bears the symbol which is the polar opposite of the Digi-Hazard. Though that symbol is never formally named, it is safe to assume it can be called the Crystal Matrix. It is from the Crystal Matrix symbol that Calumon releases his power to catalyze Digivolution. It was rumored that in the Arabic dub, the symbol on Calumon's forehead is digitally removed, but this is not true.[2] Calumon is also known as the Catalyst.

Calumon is a unique Digimon that does not digivolve. However, when Growlmon first digivolved to WarGrowlmon, the symbol on Calumon's forehead glowed and Calumon used his "Crystal Matrix", confirming that Calumon was in some way linked to the digivolution. Similar phenomena continued to happen throughout the Tamers' battles, and when Calumon was taken to the Digital World, it happened even more frequently, and sometimes to any Digimon that happened to be nearby. It was eventually revealed in the episode "Janyu's Ark" that Calumon was actually the manifested form of Digivolution itself, and he eventually used his power to the fullest to digivolve every Digimon in the Digital World to the final Mega level.

Calumon does not fight, and has no attacks. In episode 34 he tried to invent attacks out of desperation, like "Big-noogie poke-you-in-the-eye Power Beam" and "hairy goopy blistering ball", but to no avail. However, in the final battle with the D-Reaper, he appeared to be able to surround himself and Jeri with some kind of barrier.

In the series Digimon Tamers, the Digimon Sovereigns reveal that Calumon originated as the element of Digivolution - the realized version of "Digi-Entelechies". In order to hide this power from the re-emerging D-Reaper, they turned the power into the form of a Digimon. In the end of the series, the Sovereigns restore this power to the Digital World, but allow Calumon to continue to live as an ordinary Digimon.

In the Japanese version, Calumon had a habit of saying "culu". This was removed from the English Version, and some fans believe this is was to avoid any associations with Pokémon (who typically say their names frequently in the anime). However, in South-East Asia's version of the English dub (done in Singapore), Calumon keeps the habit, though it is said as "calu" instead.

Calumon appears is in Digimon's fifth and sixth digimon movies, but does not play a major role in either of them. He appears in Battle of Adventurers, traveling to Okinawa with Takato, joining him on vacation. He helps Renamon and Terriermon digivolve in their battles and somehow returns to Shinjuku (presumably brought by Omnimon) and warns Rika that Takato and Guilmon are in trouble and need her help. He travels back to Okinawa with Omnimon, Henry, Rika and their Digimon and causes the Tamers Digimon to digivolve to Ultimate when Gulfmon appears without a Blue Card, allowing them to destroy Gulfmon with Trinity Burst. When the group emerges from the ocean, he flies towards the camera and breaking the fourth wall says "bye" to the audience. In Runaway Locomon he simply helps with Rika's party and is shown to be living with Jeri, and plays no part in the battle against Locomon and the Parasimon. When Rika leaves, he wonders what's wrong with her, but gets distracted by the plate of food he's carrying and leaves.

Calumon is a helper in the DigiFarms of the game. Calumon can be added to the player's party (after completing Quest 60), but it is unable to digivolve. Calumon has a default level of 99 and scan data is given with Beelzemon's data at the near end of the game.

Calumon's Trait significantly boosts the EXP all of your Digimon receives after a battle, and has some of the best support moves in the game, including one that fully revives all fallen allies.

Impmon (インプモン,Inpumon?) is an imp Digimon who mysteriously appears and harasses the Tamers and their Digimon on occasion, saying that no 'self-respecting Digimon' would ever ally themselves to one, though he ends up becoming friends with Guilmon and with Renamon. He was even prone to harassing Calumon, scaring him on occasion. It is revealed later in the series that Impmon did live with two children upon entering the Real World - Ai and Mako. However, their fighting over who Impmon should play with caused him to run away and become disdainful of all humans. Impmon then resented the Tamers and their Digimon even more as the latter were able to Digivolve, a power that still alluded him. This did not stop him enjoying himself occasionally with Guilmon and Calumon. Although Renamon was curious about him when she questioned her alliance with Rika, she soon came to view him with contempt, and sometimes mocked him for his foolish actions, such as preferring to watch Guilmon play with children and then grumbling about it, rather than have fun elsewhere.

After attempting to prove himself by fighting Indramon, Impmon suffers a devastating and painful defeat that crushes his ego. He quickly accepts an offer from Chatsuramon as he brings him back to the Digital World: to be digivolved if he agrees to kill the Tamers and their Digimon when they arrive to retrieve Calumon. Though conflicted, Impmon accepts the offer and becomes the mega-level Demon Lord Digimon Beelzemon(ベルゼブモン,Beruzebumon?, Beelzebumon). Consumed by his new-found powers, Beelzemon acts on his whim to test his new abilities before attacking the Tamers.

Eventually, despite Leomon's attempts to snap him out of it, Beelzemon kills him and takes his data before Jeri's eyes, indirectly causing the events that nearly destroyed the Digital World. However, Guilmon and Takato bio-merge into Gallantmon and defeat Beelzemon, sparing him on Jeri's request as she wanted no one else to die though she could never forgive him. Shocked, and feeling worthless, Beelzemon wandered until he allowed some friends of the Digimon he killed extact their revenge on him, regressing him back into Impmon before being found by Renamon and Rika, who decide to bring him back into the Real World.

Taking his leave without a goodbye upon reaching Shinjuku, Impmon decides to find Ai and Mako. Although he is initially convinced they have forgotten about him, he soon finds a drawing with a note saying they have gone to their grandmother's. Upon finding them, he is touched that the two are no longer fighting, instead lavishing him with food, and asking forgiveness for the harm they put him through. Fueled by his new change of heart, and seeking his own redemption, Impmon gains the ability to warp digivolve into Beelzemon Blast Mode and helps the Tamers in their fight against the D-Reaper. He allies with Calumon in an attempt to save Jeri, before nearly getting himself killed in the attempt. At the end of the series, after the D-Reaper's destruction and officially becoming Ai and Mako's Digimon partner, Impmon finally receives Jeri's forgiveness before he regresses to Yaamon and is forced to return to the Digital World. As Beelzemon, he later reappears during Runaway Locomon, trying to help stop Locomon, but failing. During the final battle, he appears as Beelzemon Blast Mode and saves Suzie and Lopmon by destroying two Parasimon that are about to attack them. Impmon later attends Rika's birthday party.

Jeri Kato (Juri Katō (加藤 樹莉,Katō Juri?)) is the classmate of Takato whom the boy has a crush on and vice versa.[3] Her family happens to own a small tavern in Shibuya, where she works sometimes waitressing and even helping her father to handle drunk customers. She carries around a dog-shaped sock puppet from her half brother, which she uses to strike-up conversations with. At first glance, she seems to be a sort of perfect child because of her cheerful and happy personality. However, the death of her birth mother left an emotional scar on Jeri which her father was unable to resolve as she could not cope having a step-mother. Jeri happens to be among those aware of the Digimons' existence before meeting Leomon. However, Leomon's death causes Jeri to relapse into a withdrawn depression that attracts the D-Reaper's attention, kidnapping her to serve as a misery-powered battery while having the Jeri-Type Agent take the girl's place and infiltrate among her family before revealing itself. However, thanks to Calumon's presence and Leomon in spirit, Jeri regains her confidence and attempts to fight her way out before Takato saves her. From the ordeal, Jeri realizes that humans can make their own destiny and that she was never meant to be alone as she accepts Impmon's apology.

Early pre-production notes made by Chiaki J. Konaka suggest a female character which likely would become Jeri was named Mishio who cared for her younger sister more often as her parents were workers in the red-light district.[4]

When it came to the English dub of Runaway Locomon, Philece Sampler voiced Jeri. This was probably due to the fact that Bridget Hoffman wasn't available at the time.

Leomon (レオモン,Reomon?) is a Beast Man Digimon armed with a blade and master of the "Fist of the Beast King" attack. Before Bio-Emerging to the Real World, Leomon only knew of endless conflict and was at first bit frightened by Jeri's affection and insistence that he's her partner. But he grew to care for her, becoming Jeri's partner for real after his near-death experience with Zhuqiaomon during his attempt to halt Makuramon's escape. Despite Jeri's doubts of being worthy enough to be his Tamer, Leomon had much confidence in her. However, while helping the Tamers in the Digital World, Leomon dies when he restrains Beelzemon and tries to convince him what true strength is. The sight of Leomon being fatally impaled and then his data being absorbed by Beelzemon causes Jeri to fall into a depression. However, Leomon appears in spirit during the battle with the D-Reaper, first through Beelzemon using his trademark attack and then in Jeri's D-Ark to help her regain her confidence.

Kazu Shiota (Hirokazu Shiota (塩田 博和,Shiota Hirokazu?)) is one of Takato's closest friends, calling him "chumley" in the English version. He is also a player of the DigiBattle Card Game, enjoying beating Takato and Kenta all the time. His involvement in Tamers truly started when Takato actually beat him, leaving him confused, but when Takato mentioned about real life experience, Kazu wanted to go deeper into it. This leads to him and Kenta seeing Guilmon, though they eventually got over their fear and befriended him. Secretly, Kazu wanted to be a Tamer himself and be just as good as Takato and the others. His chance came when he went to the Digital World, although he and Kenta did seem out of place as the others had Partners, he made the best of it until he did finally get a partner of his own in the name of Guardromon.

An Android type, Guardromon (ガードロモン,Gādoromon?) is a protector by nature, a mechanical defense specialist who faithfully fights for justice. However, he tends to be rather foppish and frequently unlucky in his endeavors. He was originally the cyborg Digimon Andromon who attempted to liberate a village of Gekomon from the control of Orochimon, who had enslaved them to mix sake for him. By the time the Tamers under Rika arrived, Andromon was badly injured in the battle with the Tamers convince the Gekomon leader to give them some of the data packets from their drinks to heal Andromon. However, he had lost much of his energy from the fight and regressed into Guardromon as a result. He helps the Tamers defeat Orochimon before becoming Kazu's partner and helping them in the battles with Beelzemon and the D-Reaper. In the finale, Guardromon regressed to Kapurimon as a side effect of the Red Card and thus was forced to part ways with Kazu.

Kenta Kitagawa (北川 健太,Kitagawa Kenta?) is another of Takato's friends, and Hirokazu's sidekick. Kenta often gets credit for the numerous jokes that Kazu tells throughout the season. Like Kazu, Kenta wanted his own Digimon partner so he joins the Tamers in entering the Digital World. However, getting jealous and upset that he is the only one without a partner, Kenta attempts to pretend that Guilmon's his Digimon while he is separated from Takato. Eventually, though he tried to shoo him away, Kenta ends up becoming partners with MarineAngemon and is able to understand him.

MarinAngemon (マリンエンジェモン,Marinenjemon?) is a pixie Digimon who is about the size of a small housecat, said to dwell in the Internet Ocean, though he is rarely seen even by other marine Digimon. Though not a fighter as he hates violence, he does have power and deals with his attackers with his love-based Kakuna Wave attack. Appearing among the numerous mega level Digimon to help the Sovereigns fight the D-Reaper, MarineAngemon took a liking to Kenta and became his partner as a result. In the long run, MarineAngemon proves to be an unlikely ally during the battle against the D-Reaper as his love-based attacks frightened the Jeri-Type Agent, as the D-Reaper was powered only by Jeri's negative emotions. His love based attacks also served to heal a weakened Sakuyamon from the attacks she went through. In the finale, MarineAngemon departs to the DigiWorld with the others.

Suzie Wong (Shiuchon Rī (李 小春,Rī Shiuchon?)) is Henry's little sister and the youngest of Wong children. Unaware of Terriermon's true identity, Suzie believed him to be a plush toy and often dresses him up in girls' dolls' clothes and calling him "Pwincess Pwetty Pants" to his dismay. Eventually, when Henry had to leave for the Digital World, Terriermon reveals himself to Suzie so she can let him go. However, in an unexpected turn, a digital fog appears in the real world while she is at the park with her father and ends up in the Digital World. There she meets and befriends the Deva Antylamon, who is later regressed into her partner Lopmon. Eventually, during the D-Reaper's attack, Suzie takes her role as Lopmon's partner seriously as she sends him to help the others.

Lopmon (ロップモン,Roppumon?) is an three-horned bunny Beast Digimon, he spoke in an archaic dialect in the Japanese version that result with him made a female in the English version of the series.[5] Originally, Lopmon was the Deva Antylamon (アンティラモン,Antiramon?) who was assigned the task of guarding the bridge leading to Zhuqiaomon's palace. Unlike the other Devas, Antylamon does not share their disdain with humans. Meeting Suzie, Antylamon saw the girl as a small annoyance before bonding with her to the point of fighting off Makuramon when he tries to hurt the girl. As punishment, Zhuqiaomon reverts Antylamon to Lopmon. Soon after, while taking the Tamers to meet Zhuqiaomon in an attempt to reason with the Sovereign, Suzie acquires a D-Ark that makes her and Lopmon partners. Later entering the real world, being taught by Suzie, Lopmon regains his ability to become Antylamon and aids the Tamers in fighting the D-Reaper. Afterwards, regressing to Chocomon, Lopmon is forced to return to the Digital World with the rest of the Tamers' Digimon.

Ryō Akiyama (秋山 遼,Akiyama Ryō?) is a main character in many Digimon video games. He also makes an appearance in Digimon Adventure 02. He is partnered with Cyberdramon. He originates from a series of games for the Wonderswan game system, appeared in a few cameos, before entering the world of Digimon Tamers. He was considered the best player in the Digibattle card game until he left without a trace and mysteriously ended up in the Digital world with his partner Cyberdramon. When the tamers enter the digital world, they encounter the pair, and Ryo offers assistance to them in their quest, leaving for a time to calm Cyberdramon. He becomes part of the group as they return to the Digital World. He is accepted by the most of the group almost at once, but his lack of concern for his surroundings unnerves them on several occasions. He also has a habit of appearing in the middle of battles and then leaving again without much warning. Rika, however, was an old rival from his card playing days, and so treats him with hostility, although they eventually become friends. [6][7]

Cyberdramon (サイバードラモン,Saibādoramon?) is an Ultimate Level Digimon, and is the partner of Ryo Akiyama. Feral in personality, his sole purpose is to find worthy opponents to battle. Ryo has to whip him with his D-Power to keep him under control, and even abandons the Tamers briefly to protect them from his rampage. His nature is the result of his unique origins that remain unmentioned in the series; he was actually a fusion of Monodramon, who remains his docile rookie form, and Milleniummon, Ryo's nemesis from the video games. One of his Digivolutions, Justimon(ジャスティモン,Jasutimon?), was inspired by Kamen Rider and Super Sentai series from the 1970s & its American adaption the Power Rangers.[1]

Minami Uehara (上原 南,Uehara Minami?) appeared in the first Digimon Tamers movie Battle of Adventurers. She is ten years old with brown hair and blue eyes. Minami's father created the V-Pet program and has her run with the laptop containing the original program (based off her lost dog Mei), but she is chased by Tylomon. Minami is rescued by Takato, Kai and Guilmon, but is later recaptured by a Divermon.

Her V-Pet emerges to help her as Seasarmon (シーサモン,Shīsamon?) and destroys Divermon, but she is captured by Mantaryamon. She and her father are rescued by Takato, Kai, Seasarmon and Growlmon, but Mephistomon reveals himself and injures Seasarmon, causing him to de-digivolve to Labramon. Minami takes cover while the Tamers battle Mephistomon, but is nearly caught in the explosion when Growlmon drops on a ship on Mephistomon, apparently destroying him. Labramon saves her at the cost of his life and Minami apologizes for the way she treated him as a V-Pet and calls him "Mei", causing the vaccine program her father created to activate and destroy the V-Pets and all the Digimon that appeared as a result, except Mephistomon who digivolves to Gulfmon and is destroyed by WarGrowlmon, Rapidmon and Taomon. Minami is finally reunited with her father afterwards as the group cheers their victory.

A sister and brother respectively, Ai (アイ?) and Mako (Makoto (マコト?)) used to fight over sharing things, like a teddy bear. The two gave Impmon an horrible impression on humans, believing they only showed an interest in others when it suits them. However, after Impmon ran away, the two children began to change their ways; by the time he found them at their grandmother's house they have promised to share, and lavish Impmon with food when he arrives. Impmon is overjoyed when he reunites with them, and wholeheartedly promises to return when he sets off to assist the Tamers. Mako gives Impmon his favourite toy gun, which morphs into the deadly Corona Blaster. Beelzemon is consequently extremely aggravated when the D-Reaper destroys it. In the finale, while tending to Impmon's wounds, the children end up with a D-Power.

The Monster Makers (Wild Bunch) are the creators of the original Digimon program in 1984 as students at Palo Alto University. In 200X, they were reunited by Hypnos to first help protect Earth against Digimon (and, using their knowledge, to destroy the Digimon using their own data against them.), then to help create the Ark to bring the children back from the Digital World, and finally to help combat the D-Reaper. One of their greatest creations proved to be the entity known as Grani. Besides Janyu Wong, among the members of the Monster Makers are:

Continued on with the Digimon project after it was shut down in 1986, creating the Blue Cards, the D-Powers, and developed a way for Digimon to digivolve. He fell into a coma at some point, subconsciously surviving in the Digital World. He later is able to help the kids while they are in the Digital World, as well as rejoining the Monster Makers in Shinjuku to help fight the D-Reaper.

Devas (デーヴァ,Dēba?) are servants of Zhuqiaomon, most sharing his disdain for humans, each modeled after an animal from the Chinese zodiac. Some of them entered the human world in search of Calumon while the rest remained behind to oversee matters in the Digital World. Their only survivor is Antylamon the rabbit Deva, who became Lopmon.

Mihiramon is an Exhalted Beast Digimon in the form of a winged Tiger, his tail doubling as a weapon. Mihiramon bio-emerged from the top of the Shinjuku Metropolitan Building during the first activation of the Juggernaut program, sabotaging it and allowing other the Devas to cross into the Real World. He is considered powerful even for an Ultimate; Renamon even suggests that he could have been a Mega before the tamers were able to scan him. He managed to defeat Kyubimon and Gargomon, but was destroyed by WarGrowlmon.

Sandiramon is an Exhalted Beast Digimon in the form of a giant Snake, able to generate his Venom Axe from his mouth and wield it with his tail. Sandiramon bio-emerges into the subway tunnels of Shinjuku, out speeding the Tamers when they pursue him while laughing. After a battle, Growlmon manages to mortally wound him thanks to a Power Modify Card from Kazu. However, Sandiramon dies laughing while revealing the other Devas will avenge him and Mihiramon.

Sinduramon is an Exhalted Beast Digimon in the form of a Rooster wearing a super-hard orb-like body armor. He bio-emerged near where Takato and Henry's field trip was camping, originally small under he drained enough of a nearby city's electrical power to increase his size while putting an owl under his spell to serve as his emissary. Eventually, while attempting to suck up more power from the dam, Growlmon's attack ends up knocking Sinduramon into the water, and the electricity he had amassed destroys him.

Pajiramon is an Exhalted Beast Digimon in the form of a Goat centaur, her weapon of choice being an crossbow. She accompanied Vajramon into attacking a shopping district. When Pajiramon had Gargomon pinned, Henry used the Blue Card to Digivolve Gargomon to Rapidmon who destroys her.

Vajiramon is an Exhalted Beast Digimon in the form of an Ox centaur and armed with the twin Deva Blades. His warrior-like personality values honor, loathing both cowardice and humans. He accompanied Pajramon into attacking the shopping district where he was seemingly destroyed by Rapidmon after engaging Renamon and developing feelings for her. Vajramon is however revived and later requests an audience with Renamon, taking their meeting to Tokyo Dome where he unknowingly played into divulging the Devas' reasons for being in the human world in his attempt to get her to side with them. By the time he realizes the truth, Vajramon is destroyed by Taomon for good.

Indramon is an Exhalted Beast Digimon in the form of a Horse, armed with the Horn of Desolation that is normally strapped on his back until he uses it to generate ultrasonic waves. When he first bio-emerges in the real world, Indramon insults Impmon by smelling "the stench of humans" on him. He then disappears but later returns and battles Impmon, humiliating him further while defeating the Tamers' Digimon easily before forced to leave in response to Juggernaut's activation. Indramon returns later at a much larger size, only to be destroyed by WarGrowlmon.

Kumbhiramon is an Exhalted Beast Digimon in the form of a Rat encased in a metal orb, his Deva Clone ability of creating five duplicates of himself making up for his lack of fighting prowess. He bio-emerged at Shinjuku Park where he terrorizes Jeri and Calumon until they are rescued by Leomon. This caused Kumbhiramon to retreat. In the second encounter, Kumbhiramon attacks Leomon before Gargomon and Leomon destroyed Kumbhiramon and his clones altogether.

Vikaralamon is an Exhalted Beast Digimon in the form of a large Pig. He is the last Deva to bio-emerge into the Real World, his massive size, extreme durability and great strength enabling him to rampage through Shinjuku. Because the attacks of the Tamers' Digimon at their Champion level have no effect on Vikaralamon, Takato, Rika, and Henry manage to wish hard for Blue Cards so their partners can use their ultimate forms. Despite Yamaki's interference, the battle resumes, and Takato sent his strength to WarGrowlmon, allowing him to obliterate Vikaralamon. He was considered the most powerful of the Devas by many of the tamers, and his battle with them revealed the existence of Digimon to the world at large, almost ruining Yamaki's reputation.

Makuramon is an Exhalted Beast Digimon in the form of a Monkey with the Primal Orb as his weapon of choice. He arrives to the human world in the form of a strange boy around the time Indramon bio-emerged. He proceeds to act incognito before finding Calumon, discarding his disguise during Vikaralamon's rampage and attacking the Hypnos headquarters at the time when the Juggernaut was activated. When Vikaralamon was defeated, he snatched Calumon and escaped back to the Digital World as Zhuqiaomon keeps Leomon from pursuing. During his trip back to Zhuqiaomon's castle, Calumon was freed by the DigiGnomes, so Makuramon enlisted Majiramon's help to look for him. Makuramon is later killed by Beelzemon when he taunts him as he was about to be killed by Megidramon, his data absorbed soon after. He was perhaps the most ambitious of the Devas, hoping to use his successes to gain favour with Zhuqiaomon over Catsuramon, though he often fled from fights, and his arrogance proved to be his undoing.

Catsuramon is an Exhalted Beast Digimon in the form of a Dog, serving as Zhuqiaomon's right hand. He brought Impmon back to the Digital World and promised him the power to Digivolve in exchange that he kills the Tamers for Zhuqiaomon. When the Juggernaut program was activated by some people, it caused a storm and he made himself known to the Tamers. He used his attack to break Taomon's barrier and made off with Calumon. During Gallantmon's battle with Beelzemon, Zhuqiaomon sent him to delete the traitor Lopmon. However, Terriermon takes the attack as Catsuramon was destroyed by Gallantmon soon after, his data was absorbed by Beelzemon.

Majiramon is an Exhalted Beast Digimon in the form of an oriental Dragon who uses the hairs on his body to execute his Flaming Arrowhead attack. He helps Makuramon search for Calumon before they run into the Tamers. Ryo uses his Golitah Digi-Modify card to enlarge his partner, Cyberdramon and Cyberdramon kills Majiramon by crushing his skull.

The Digimon Sovereigns (四聖獣,Shiseijuu?) are four power mega-level Digimon who each rule a quarter of the Digital World, each possessing twelve DigiCores. They all dwell on the 6th, highest plain of the Digital World, said to be the first Digimon to reach their highest form and modeled after the Four Sacred Beasts of Asian mythology. However, when the D-Reaper emerged after years of hibernation, the Sovereigns fell into disarray over uses the Catalyst Shining Digivolution to digivolve every Digimon to fight back the threat. But knowing that their ability to digivolve is what causing the D-Reaper to stir convinces Azulongmon to have the DigiGnomes turn the Shining digivolution into Calumon and send him to the human world.

Refusing to accept this decision, Zhuqiaomon sends his Devas to find Calumon and bring him back. Eventually, after his Devas are mostly destroyed, it took Azulongmon's intervention to convince Zhuqiaomon that the humans are their friends and not their enemies. After the Ebonwumon and Baihumon join up with their fellow Sovereigns as D-Reaper reacts to Calumon's presence, the Digimon agrees to use his power to give the Sovereigns an army to fight the D-Reaper while he and the Tamers return to their world. In the series finale, the Sovereigns hold the Cable Reaper at bay while MegaGargomon enacts Operation Doodlebug.

Zhuqiaomon (スーツェーモン?) is the guardian of the Digital World's Southern hemisphere and modeled after Suzaku with power over fire. The most unforgiving of the Sovereigns, Zhuqiaomon is passionate to protect the Digital World from any threat to it. Learning that Azulongmon send the Catalyst to the human world, Zhuqiaomon refused to allow its power to be used by the humans and sent the Devas to retrieve it. Once obtaining Calumon, Zhuqiaomon confronts the Tamers after they defeated the bulk of his forces. Despite the newly formed MegaGargomon defeating him, Zhuquiaomon emerges from the remains of his palace and nearly killed everyone before Azulongmon intervened. After fighting his fellow Sovereign and then Gallantmon, Zhuqiaomon decides to ceasefire and eventually accepts the Tamers' Digimon choice in fighting alongside their human partners.

Azulongmon (チンロンモン,Chinronmon?, Qinglongmon) is the guardian of the Digital World's Eastern Hemisphere who is based on Seiryuu with power over thunder and lightning. He is most amiable of the Sovereigns, seeing the good in humans and coming to their aid in dire events in convincing Zhuqiaomon to end his fight with the Tamers.

Ebonwumon (シェンウーモン?, Xuanwumon) is the guardian of the Digital World's Northern hemisphere, the oldest of the Digimon Sovereigns whose form is modeled after Genbu with phantasmagoric water techniques. Having a second snake-head, Ebonwumon is a gentle-hearted in personality as looks after Baihumon's domain during his fellow Sovereign's fight with the D-Reaper. In the English dub, Ebonwumon speaks with an Irish brogue.

Baihumon (バイフーモン?) is the guardian of the Digital World's Western hemisphere, the youngest of the Digimon Sovereigns. As his follow Sovereigns Azulongmon and Zhuqiaomon were fighting amongst themselves, Baihumon was attempting to fight the D-Reaper on his own by the time Ryo arrived to his domain. However, Baihumon is exhausted from the relentless foe and fall back to the other Sovereigns to join forces with them.

DarkTyrannomon attacked Maildramon when he was chasing Calumon in the Digital World. Maildramon has the advantage and nearly destroyed DarkTyrannomon until he digivolved into MetalTyrannomon and killed Maildramon by stomping on him.

Gorillamon was Terriermon's old foe from the video game that Terriermon emerged from. He bio-emerged in town and attacked Henry and Terriermon at a construction site. He was defeated when Terriermon fired his Bunny Blast into his cannon.

While Guilmon and Calumon were decorating the school yard at Yodobashi Elementary, Vilemon bio-emerged there and attacked them. Takato and Henry arrived and Vilemon ended up fighting Guilmon and Terriermon. When Rika and Renamon arrived, Vilemon was deleted by Renamon.

Allomon had bio-emerged in a neighborhood and encountered Rika and Renamon. Though Renamon had a hard time fighting him, she gained unlikely help from Guilmon and Terriermon. When Renamon used a combination of her Diamond Storm attack and a copy of SnowAgumon's Frozen Wind attack, Allomon was defeated.

A Devidramon bio-emerged in the episode "The Question of trust" and began terrorising the city. Rika wanted Renamon to fight it but she told her it was Guilmon's fight who in question was already dueling with him. Guilmon felt upset that Takato was angry at him when he never meant to do anything wrong (Impmon had manipulated him into helping him make mischief) and couldn't put his full heart into it. When Takato learnt the truth and told him he wasn't angry, Guilmon digivolved into Growlmon and destroyed Devidramon absorbing his data.

IceDevimon is a mass murderer who killed and absorbed many Digimon in order to become more powerful. In "The Icemon Cometh", he Bio-Emerges in the Real World and begins stalking Rika, who he believes to be as harsh and cruel as himself, and able to make him even more powerful. He tries to tempt her with describing his power, eventually seizing her and taking her to his frozen lair atop a skyscraper. Though he shows her the graveyard of his amassed victims (IceDevimon implied that some of his victims had human partners), she is able to resist the temptation and refuse his offer. He then demands a duel against Renamon, who starts toward the lair. Meanwhile, Takato, Henry, Guilmon, and Terriermon arrive and try to rescue Rika, but IceDevimon encases the Digimon in ice. Renamon appears, but IceDevimon is too powerful for her, and even after Rika declares that Renamon is her friend and Renamon digivolves to Kyubimon, she is unable to defeat him. Guilmon and Terriermon then break free of the ice, and Takato uses "Speed" and "Hyper Wing" cards on Guilmon, allowing him to defeat IceDevimon and absorb his data. Because of this ordeal, Rika again had trouble with accepting Renamon as a friend, and she nearly gave up being a Tamer.

The Hypnos Organization once used Yugoth to prevent Musyamon from bio-emerging in the Real World with Musyamon vowing revenge. By the second time, Musyamon evaded Yugoth and bio-emerged. He ended up fighting Takato and Guilmon until Henry and Terriermon arrived. Musyamon was deleted by Gargomon.

Takato and Henry ended up encountering Harpymon in the park. When Renamon joined the battle, she was no match for Harpymon. When Harpymon was about to finish off Renamon, Rika stabbed her with a stick. Calumon's powers caused Renamon to Digivolve into Kyubimon who deletes Harpymon but doesn't absorb her data.

Takato and Guilmon fought DarkLizardmon in an abandoned building one night and managed to knock her down. Just then, Yamaki and some Hypnos Agents arrived and took DarkLizardmon into custody. The experiments Hypnos subjected DarkLizardmon to was enough to delete her.

In "Battle of Adventurers", Apocalymon attempts to Bio-Emerge in the Real World, but is confronted by Omnimon. During the battle, Apocalymon reformats to Mephistomon, and though Omnimon attacks him, he is unable to stop Mephistomon from Bio-Emerging. Mephistomon has a deep hatred for all life, and so plots to destroy the world and everything in it. In order to do so, he disguises himself as Ryuuji Tamashiro, the president of the Okinawan VP Laboratories. He soon becomes famous for his part in marketing the V-Pet, a digital pet that he modified to cause other Digimon to Bio-Emerge and become his servants. Takahito Uehara, the original creator of the V-Pet, detects the virus that Mephistomon had implanted in the V-Pets, and creates a vaccine program which he implants into the original V-Pet, which manifests as Seasarmon. When Mephistomon finds out about the vaccine, he uses his servants to kidnap Takehito and find out the vaccine's location. Once Uehara reveals that the vaccine is in Seasarmon, Mephistomon doffs his disguise and attacks Seasarmon and the Tamers. As part of the battle, he drags the group into an apocalyptic dimension modeled after his intentions for the Real World, but is defeated, allowing the vaccine program to activate and purge the virus. It is revealed that Mephistomon is not actually dead, and he digivolves to Gulfmon, a larger and more powerful, but less intelligent form. The Tamers' Champion Digimon are unable to scratch him, but Calumon's powers activate, digivolving them to Ultimate. As Gulfmon charges at them, they combine their powers into their "Trinity Burst" attack, impaling and destroying Gulfmon.

In "Runaway Locomon", Locomon bio-emerges in the Real World. It hurtles along Tokyo's train tracks, creating a rift to the Digital World at Ichigaya station. Hypnos and the Tamers work together to try and stop Locomon. Growlmon initially attempts to hold back the train, but fails and reverts to Guilmon. He then goes to get help from the other Tamers while Takato, Rika and Renamon sneak aboard. Once aboard, Rika attempts to attack Locomon's furnace, but is in turn attacked by Parasimon. Beelzemon, while riding Behemoth, also attacks Locomon, but hardly fazes him. At this point, Rika returns to the others and attacks them. It is soon revealed that she is being controlled by Parasimon, and that Parasimon is also responsible for taking over Locomon and sending him through Tokyo. The other Tamers catch up to Locomon and return Guilmon, who immediately frees Rika from Parasimon's control. Parasimon forces Locomon to digivolve to GranLocomon, and then attacks Takato and Guilmon, who biomerge and destroy him. However, Parasimon is able to send a signal into the rift before he disappears — this signal allows many other Parasimon to bio-emerge, and they begin destroying the city. The Tamers and their Digimon enter into pitched battle with the Parasimon horde, but are overwhelmed until Gallantmon digivolves to Gallantmon Crimson Mode, flies into the rift, and uses his Crimson Light technique to obliterate the entire swarm. Afterwards, GranLocomon reverts to Locomon and returns to the Digital World.

In "Battle of Adventurers", Omnimon is seen chasing an Apocalymon that reformats itself into Mephistomon, until the foe escapes from his pursuit. Later, he aids the Tamers by bringing them to Mephismon's hideout in an abandoned Okinawan laboratory.

Following their encounter with Meramon, the Tamers were awakened later that night by a Jagamaon stampede. Meramon ended up killed by the stampede. When Rika bereted them the next morning, the lead Jagamon stated that they were frightened by the attack of Makuramon and Majiramon.

Rika, Renamon, Kazu and Kenta ended up transported outside a house in a valley with strong winds. The residents of the house ended up being Babamon and her husband Jijimon, who fought with each other because they were bored. They were happy to have guests and gave the children and Digimon dinner. When Kazu and Kenta asked for them to be their partners they got it confused: They thought that they were supposed to be the Tamers and so they tamed Kazu and Kenta until Renamon ended their roughhousing by hurtling them down a flight of stairs. When Rika and the others left Jijimon and Babamon went back to fighting each other for entertainment. Later on when Calumon released his Shining Digivolution power, Jijimon and Babamon appeared with the other Mega level Digimon that gathered to help the Sovereign fight the D-Reaper.

Takato, Guilmon, Henry, Terriermon, Jeri and Leomon came across a Mudfrigimon village in the barren desert, which was constantly attacked by an evil motorcycle called Behemoth. When Behemoth appeared again, Leomon rescued a young Mudfrigimon and thus the other Mudfrigimon welcomed them happily. An older Mudfrigimon also explained to them that they are in the "forgotten village of discarded data", which (as well as the Mudfrigimon) was created by useless data. When Behemoth again attacked, Guilmon knocked off its possessed pilot (a MetalKoromon) but ended up being possessed too. Leomon broke its control on Guilmon and the motorcycle fell into a lava pit, only for it to re-emerge with Beelzemon (the digivolved Impmon) as its driver on it. Later all the Mudfrigimon were exposed to the Light of Digivolution but it is unknown what they digivolved too.

Megadramon was found imprisoned in the Clock Plain and accidentally freed when Rika restarted the clock that ended up freeing him. Kyubimon was no match for him, but the arrival of Ryo and Cyberdramon managed to reimprison Megadramon.

In Kazu's Upgrade, Orochimon has enslaved a Gekomon and Otamamon village. An Andromon continuously tries to defeat Orochimon, but is unsuccessful, and Jeri ends up being kidnapped by Orochimon to make milkshakes (or saké, in the Japanese version). Orochimon is ultimately destroyed by Leomon when Jeri uses a LadyDevimon Digi-Modify card.

A Divermon resided in the underground/underwater part of the Digital World. It mistook Takato, Henry, and Terriermon for harming them and attacked. He learned that they weren't actual harming them after being knocked down by Terriermon's attack.

Calumon's Shining Digivolution enabled some of the Digimon to Digivolve and rendezvous with the Digimon Sovereign in order to help fight the D-Reaper. Besides Jijimon and Babamon, the Digimon that came to their aid were MetalSeadramon, Machinedramon, something that looks like Pukumon, Gryphonmon, Hououmon, Boltmon, Plesiomon, and GranKuwagamon. MarineAngemon was originally part of the army, but he became so attached to Kenta that he became his partner instead.

The D-Reaper, also known as the "True Enemy", is a digital lifeform that appears as the primary antagonist. Unlike the antagonists of previous Digimon series, the D-Reaper is neither a Digimon nor intentionally evil as it is only following its programmed objective through extensions of itself called Agents. Though it began in an extremely primitive state as pinkish-red grey goo, it is thought that its ability to become powerful enough to overcome the Digital World was due to its hibernation being so far beneath the Digital World that it actually connected with another dimension.[9] The general design aesthetic of the D-Reaper was that of a "Digital creature", exemplified in such details as the jigsaw-like fringes of the Agents, and the optic fiber/telephone wire construction of the Reaper and Mother D-Reaper. Konaka remarked that he was especially fascinated by details like the wings on ADR-02.[10] Aramaki was also responsible for the design of the "D-Reaper Zone" as it appears on Earth.[11]

The Reaper program was created in the late 1970s, allegedly by the United States Department of Defense, before Digimon and even the DigiGnomes, which appeared in the early 1980s. Though this is only set 30 years in the past of Digimon Tamers, in the fast-growing Digital World it is comparable to the Cambrian period (542-488 Ma). It was designed so that whenever the number of digital lifeforms surpassed a set amount, it would delete them to return the Digital World back to a state of nothingness, in order to prevent the Digital World from being overloaded. However, when it was written, the Digital World had a very small RAM size, and while the network has grown exponentially, the D-Reaper's threshold is still based on that early, tiny figure. With nothing to do at the time, the D-Reaper program went dormant and remained deep within the recesses of the Net.[9] At about this time, the "Creeper" virus infected ARPANET, the network belonging to the Department of Defense. It was deleted by the "Reaper" program, which was allegedly created for only this purpose.[12]

In 1980, the Artificial Life research project "Tierra" began operations. However, the Reaper program causes mass genocide of Tierra's virtual lifeforms whenever they multiplied beyond a certain amount of memory. Throughout the 1980s, the SIGINT system known as "ECHELON" began operations under the leadership of the United States Department of National Security, which built communications bases in various nations across the globe. It is thought that the self-defense program used by ECHELON was a forerunner of the D-Reaper, or the program itself.[12]

By the 2000s, the network had expanded exponentially. This created a huge influx of data into the Digital World, which the Digimon used to "Digivolve" and change. Though the system was large enough to handle this load, the Sovereign Azulongmon sensed that it could reawaken the D-Reaper, and with the help of the DigiGnomes he transformed the "Catalyst" program into the form of a Digimon, Calumon. Though this greatly slowed the growth and Digivolution of Digimon, it was not enough to stave off the D-Reaper, which soon reactivated. At the time, though, it was still in an extremely primitive state, and the Sovereigns attempted to find solutions before the problem became too huge.[9][12]

However, managing to capture Jeri, the D-Reaper uses Hynpos's system to manifest its main body, holding its Kernel Sphere, into the human world and turn the Shinjiku Metropolitan building into its base of operations while converting the surrounding area into the D-Reaper Zone. To accomplish its goals of expanding its territory while studying humans, the D-Reaper produces extensions of itself known as "ADR's", or "Agents of the D-Reaper". Due to being drones that all act according to the single consciousness of the D-Reaper, the Agents operate outside of the D-Reaper Zone by a red life line, similar in function to umbilical cords. When these cords are severed, the Agent becomes much weaker and easier to defeat, and weaker Agents will dissipate completely. Once the D-Reaper creates a new type of ADR, it will continue to use it until it is no longer useful and efficient. The various ADR's are named by the order they are created in, though they also possess codenames based on their appearance and function.[10]

The ADR-01: Jeri-Type: A Spy Agent whose form is based on Jeri Katou from when she started becoming depressed, created in order to analyze human thought. It starts out identical in form to Jeri, lacking the life line of succeeding ADR models, but later transforms into a taller angelic parody of the original. In the end, Jeri-Type was absorbed back into the D-Reaper to serve as Mother D-Reaper's first and last line of defense as both an enlarged face and a giant faceless version of her previous form. Jeri-Type was designed by Katsuyoshi Nakatsuru.[10]

The ADR-02: Searcher: An Intelligence Gathering Agent. It is small, and has no offensive capability, but usually appears in large swarms. It was designed by Kenji Watanabe.[10]

The ADR-03: Pendulum Feet: An Antiaircraft Attack Agent. It is the first offensive Agent created by the D-Reaper, and uses its floating extensions to perform remote strikes. It was designed by Kenji Watanabe.[10]

The ADR-04: Bubbles: A Ground Combat Agent that appears in swarms, but it is able to use the wave motion guns on its arms to attack. It was designed by Shinji Aramaki.[10]

The ADR-05: Creep Hands: A Grappling Agent. It is a medium-sized offensive unit, which uses its spiral-shaped, stretchable arms for locomotion and hand-to-hand combat. It was designed by Shinji Aramaki.[10]

The ADR-06: Horn Striker: A Military Commander Agent. It is a medium-sized combat unit of overwhelming power. It was designed by Katsuyoshi Nakatsuru.[10]

The ADR-07: Paratice Head (a mis-transliteration of Palates Head, as its body is covered with mouths): A Reconnaissance in Force Agent. It is large, and somewhat like the mid-boss of a video game. It makes sinister, unpredictable attacks. It was designed by Kenji Watanabe.[10]

The ADR-08: Optimizer: A Mother Ship Agent. It is large, and somewhat like the mid-boss of a video game. It was designed by Kenji Watanabe, who focused the design on its huge size.[10]

The ADR-09: Gatekeeper: Also known as the "D-Reaper Ball", is a Base Defense Agent. It is formed to protect the D-Reaper's core, the "Kernel Sphere". It was designed by Katsuyoshi Nakatsuru.[10]

Eventually, the D-Reaper reabsorbs all its Agents and uses Jeri's emotions to transform into the Mother D-Reaper, an Ability Synthesis Agent whose body is made up of countless cords, optic fibers, and electrical and telephone wires. As a result, the D-Reaper consumed all of Shinjuku. It was designed by Kenji Watanabe.[10] From this point, complete its control over both worlds, the Mother D-Reaper opens a portal in the Digital World as it is now mostly consumed by its other self. The DigiWorld's D-Reaper underwent a similar evolution into the Reaper or "Cable Reaper" Ability Synthesis Agent, possessing the offensive powers of the Agents that compose it. It was designed by Kenji Watanabe and Katsuyoshi Nakatsuru, who gave it scythes to symbolize that it is a physical manifestation of Death.[10] From there, the Mother D-Reaper waits the Reaper to arrive so they can merge before beginning the systematic termination of both humans and Digimon. However, as the Tamers act out Operation Doodlebug while Gallantmon save Jeri and Calumon, both halves of the D-Reaper are sucked into the vortex where the reverse time effect devolves D-Reaper into a harmless uncomplicated program and sends it back to the Digital World.

The DigiGnomes are digital creatures that evolved from the same Digital World data that Digimon did, and have the power to grant wishes. They were created in 1980, making them the first artificial digital creatures. The DigiGnomes were there when the D-Reaper attacked the Digital World in 1990. In 200X when the D-Reaper was slowly resurfacing, Azulongmon had the DigiGnomes transform the Shining Digivolution (the source of Digivolution for all Digimon) into a Digimon named Calumon, who ended up in the Real World. The DigiGnomes were also used by Shibumi to make Blue Cards for the Tamers. When Calumon was captured by Makuramon and the cage he was in was trapped in a circuit the DigiGnomes freed him when Makuramon lost grip of it. Rika Nonaka and Renamon were the first Tamer team to encounter the DigiGnomes. Takato Matsuki, Henry Wong, and Terriermon encountered them in Shibumi's library. The DigiGnomes also appeared when Suzie Wong convinced Antylamon to play with her. Takato later saw the DigiGnomes flying towards Zhuqiaomon's castle. When the D-Reaper was growing in power, some DigiGnomes sacrificed their lives to release the Shining Digivolution throughout the Digital World, causing all Digimon to Digivolve to their Mega Forms. A DigiGnome later placed MarineAngemon in Kenta's pocket without anyone noticing. Later on during the battle against the D-Reaper, Ai and Mako (Impmon's Tamers) received a purple D-Power from out of nowhere as a DigiGnome flew over a bus. In the aftermath of the victory over the D-Reaper, the Tamers' Digimon disappeared back to the Digital World. Later on, a DigiGnome hovered over Guilmon's old hiding place and the gate to the Digital World opened, which was proof that a DigiGnome had granted Takato's wish.

The Ark was originally devised by the Monster Makers to extract the tamers from the Digital World, as any portals that had opened in the aftermath of Vikaralamon's ramapage had closed before or shortly after the tamers set out. It was created using the same artificial intelligence programme designed for the Digimon. Once it was prepared, it was sent into the Digital World where the tamers first landed, with instructions to wait forty minutes before heading for the Real World. Most of the tamers were able to make the journey successfully, but Takato fell out, while Rika, Renamon, Ryo and Cyberdramon chose to rescue Impmon. Guilmon, who spoke to the Ark as if it was sentient, desperately pleaded for it to stop, and to everyone's surprise it did so, allowing all the tamers to board to return home. Although the Ark was attacked by the D-Reaper, Takato spoke to it in encouragement, and it threw off the program and completed the journey. The D-Reaper, eventually entered the Real World, and the Ark, running out of power, was trapped in limbo.

Some time later, Yamaki was astonished when the Ark contacted him directly, asking for instructions. The program was still functioning and seemed to have grown sentient, like the Digimon. The Monster Makers thus put it to use as a weapon, creating chrome digizoid plating and armed it with a Yugoth Blaster, rechristening it Grani. Grani quickly developed an attachment to Gallantmon, and became his steed in the battle against the D-Reaper. Sadly, in the final battle it was crippled, and was left behind so the tamers could continue on. However, as Gallantmon's defeat seemed inevitable, Grani contacted him directly, telling him that though he had little strength left, he could give up the power to make Gallantmon fly. When Guilmon asked the steed if it was certain, Grani replied that Takato and Guilmon were his friends because they spoke to him, confirming he was just as sentient as any Digimon. Grani then gave up his physical form, and Gallantmon Crimson Mode came into being.

Behemoth is Beelzemon's motorcycle, which would possess anyone else who rode it and turn them to evil. Initially, it appeared being driven by MetalKoromon and attacking the Mudfrigimon village. However, Guilmon replaced MetalKoromon. Leomon knocked Guilmon from the motorcycle, and it drove off a cliff; but thereafter, it was ridden by Beelzemon.

It was destroyed during Gallantmon's fight with Beelzemon, but reappeared in the movie.

^In the English dub, Rika's mother is twice-referred to as "Makino" as though it were her first name, once while answering her phone ("This is Makino!"), and once by her agent ("For you Makino, anything!"), but after this, she is consistently referred to as "Rumiko." "Makino" was the family's last name in the original Japanese, but its use here is not in that context. One suggestion posits that "Makino" could be her modeling name, as she only uses it with people involved in the industry.